基于Seep 3D的透水性沥青路面结构组合设计  

Structure combination design of permeable asphalt pavement based on Seep 3D

作　　者：骆明金 LUO Mingjin(Kunshan Transportation Engineering Group Co.,Ltd.,Kunshan 215300,China)

机构地区：[1]昆山交通工程集团有限公司,江苏昆山215300

出　　处：《山东交通学院学报》2020年第4期63-70,共8页Journal of Shandong Jiaotong University

摘　　要：采用Seep 3D三维路面有限元建模,在非饱和渗流的理论基础上,以单层透水路面坡度与透水层厚度为变量,分析不同结构组合下透水性沥青路面产生路面径流时的临界降雨强度,模拟路表积水扩散与变化特征,提出适用于昆山市气候条件的单层透水性沥青路面结构的组合方案,为海绵城市水流通道和排水设施的布置提供参考。研究结果表明:路表产生积水时的临界降雨强度及积水位置与路面横坡和透水层厚度密切相关,昆山市单层透水性沥青路面最优结构组合为2.5%的横坡+4 cm透水层厚度结构,可最大限度地排出路表水,保证在大雨强度下不出现路表积水。Based on the theory of unsaturated seepage,with the help of Seep 3D finite element model,taking the gradient and thickness of the single permeable pavement as variables,the critical rainfall intensity is analyzed when the permeable asphalt pavement produces the pavement runoff under different structure combinations,simulates the diffusion and changing characteristics of the surface ponding and puts forward the structure combination of the single permeable asphalt pavement which is suitable to the conditions of Kunshan′s climate,which provides reference for the layout of the water channel and drainage for the sponge cities.The research results show that the critical rainfall intensity and the water-accumulating location are closely related to the cross slope and the thickness of the permeable layer of the pavement;the optimal structure combination of the single permeable asphalt pavement in Kunshan city is 2.5%of the cross slope and 4 cm of the thickness of the permeable layer,which can discharge the surface water to the greatest extent and ensure that the surface water will not appear under the intensity of heavy rain.

关 键 词：有限元 透水路面 路面横坡 临界降雨强度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]